Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.123..117n&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 123, no. 1, June 1986, p. 117-123.
Astronomy and Astrophysics
Astrophysics
3
Galactic Evolution, Galactic Rotation, Galactic Structure, Many Body Problem, Mass Distribution, Missing Mass (Astrophysics), Galactic Clusters, Mass To Light Ratios, Virial Theorem
Scientific paper
Several N-body experiments were performed in order to simulate the dynamical behavior of systems of galaxies gravitationally dominated by a massive dark background. Mass estimates from the dynamics of the luminous component under the influence of such a background are discussed, assuming a constant dark/luminous mass ratio and plausible physical conditions. Previous studies (Smith, 1980, 1984) about the dependence of the virial theorem mass on the relative distributions of dark and luminous matter (Limber, 1959) are extended. It is found that the observed ratio of the virial theorem mass to luminosity in systems of galaxies of different sizes could be the result of different stages of their postvirialisation evolution as previously suggested by White and Rees (1978) and Barnes (1983). This evolution is mainly the result of the dynamical friction that dark matter exerts on the luminous component. Thus the results give support to the idea that compact groups of galaxies are dynamically more evolved than large clusters, which is expected from the 'hierarchical cluster' picture for the formation of such structures.
García Lambas Diego
Navarro Julio F.
Sérsic Jose Luis
No associations
LandOfFree
Dynamical effects of dark matter in systems of galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamical effects of dark matter in systems of galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical effects of dark matter in systems of galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1830078